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Fig. 6 | BMC Microbiology

Fig. 6

From: Application of cotton straw biochar and compound Bacillus biofertilizer decrease the bioavailability of soil cd through impacting soil bacteria

Fig. 6

RDA analysis (A) and structural equation modeling (SEM) (B) between soil biochemical properties and soil microbial structure at phylum level. Abbreviations: soil available Cd, available Cd; pH, soil pH; Urase, soil urase activity; Sucrase, soil sucrase activity; Catalase, soil catalase activity; ALP, soil alkaline phosphatase activity. Blue lines indicate negative relationships, while red lines indicate positive relationships. The microbial diversities are represented by the Chao1 and Simpson indexes based on the rarified same sequencing depth. The width of arrows indicates the relevance of significant standardized path coefficients (P < 0.05). ***P < 0.001, **P < 0.01

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